Adrian Grenier

The heart-wrenching story of our lonely whale starts in 1989, when the U.S. Navy discovered a strange 52-hertz frequency on their under water microphones. Unsure of what was causing the noise at first, bio-acoustian William Watkins eventually determined the sound was being made by a solitary whale, calling out at a frequency that confused and drove off other whales.

Unable to communicate with others of its kind, this creature was probably the loneliest whale in the world.

Watkins was determined to change that and began a 12-year search for the animal, whom he dubbed 52 for the whale's unique frequency. Unfortunately, Watkins passed away in 2004, and the mission to find Lonely Whale came to a halt.

It's been more than two years since Entourage aired its series finale, but fans of the HBO hit will be happy to hear that the boys will be back – this time on a much larger screen.

Kevin Connolly, who played Vincent Chase's (Adrian Grenier) manager and best friend Eric Murphy for eight seasons, told TMZ Monday that not only is an Entourage movie in the works, but that production on the film will begin as early as January.

For seven seasons, Entourage fans have followed the triumphs and trials in the life of Vincent Chase as the movie star character and his pals conquered Hollywood and lived the good life in Los Angeles.

In doing so, fiction has altered real life of Adrian Grenier, who plays Vince. "I was a brooding pretentious artist before I met Vince, and I now I'm somewhere in between having mildly good taste and being able to just let down your guard and have fun," the actor, 35, told PEOPLE of how his character has changed him.

It's all coming to an end, though, as Entourage begins its final season on Sunday (10:30 p.m. ET). Before the curtain draws to a close on the HBO hit, Grenier gives some insight into what to expect in the final eight episodes, as well as the future of the franchise.

The first time Kimberly Williams-Paisley left her country star husband in charge of their son Huck, she was, he recalls, a nervous mother.

"She was going away to do a press thing in New York, and she gave me this list of things to do like: 'No gluten, make sure he takes his nap, don't let him watch TV,' " Brad Paisley says of the care needs of the now 3-year-old. So, he did what any caring husband would do: He punk'd his wife.

"We no sooner had a 'coast is clear' kind of situation, [then my band and I] went and bought a doll at Toys 'R Us – a life-size, most realistic doll we could find – and dressed it up in the same clothes [as Huck] and filmed," says the practical jokester, known for pranking tour mates Taylor Swift and Kellie Pickler.

The stars of Entourage are usually just as tight off-screen as they are on the show, but an alleged sock-stuffing incident during a PEOPLE photoshoot has sparked a playful war of words between Adrian Grenier and Kevin Connolly.

Grenier's gone on the mock-defensive after Connolly appeared on Tuesday's Tonight Show with Conan O'Brien and, after the late night host showed a PEOPLE photo of Grenier, Connolly and costar Jerry Ferrara costumed as the Bee Gees for PEOPLE's Hottest Bachelors issue, Connolly told the audience that Grenier's ample disco-pants bulge came courtesy of a strategically placed sock.

"My question is: how would HE know?" Grenier told PEOPLE at the sixth season premiere party for the HBO hit. "What was he doing looking? And why was Conan looking too? It's weird! I've never scrutinized another man's groin area in my entire life – or his socks, for that matter."